APA

National Institutes of Health (U.S.), . (1970). Beware of plaque, it causes tooth loss through periodontal disease. [Washington, D.C: .

Chicago

National Institutes of Health (U.S.), . 1970. Beware of plaque, it causes tooth loss through periodontal disease. [Washington, D.C: .

Harvard

National Institutes of Health (U.S.), . (1970). Beware of plaque, it causes tooth loss through periodontal disease. [Washington, D.C: .

MLA

National Institutes of Health (U.S.), . Beware of plaque, it causes tooth loss through periodontal disease. [Washington, D.C: . 1970.